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30
Aug
2016
Research Results
The Federal Railroad Administration’s LiDAR-Based Automated Grade Crossing Survey System
Subject
Grade Crossing Technology
Keywords: Grade crossing, high-profile grade crossing, humped grade crossing, LiDAR, automated, DOTX 218
Abstract: FRA equipped a track inspection vehicle with LiDAR sensors to identify grade crossings where lower-riding vehicles may become stuck due to large ground level changes.
Report Number
RR 16-36
Office
RDI-23
21
Jun
2016
Research Results
Ballast Degradation Characterized through Triaxial Testing
Keywords: Ballast degradation, triaxial testing, LA abrasion test
Abstract: Transportation Technology Center, Inc. (TTCI) has supported the development of a large-scale triaxial test device for testing ballast size aggregate materials at the University...
Report Number
RR 16-21
Office
RDI-21
16
Jun
2016
Research Results
Prototype Next Generation Frog Foundation – Preliminary Evaluation
Keywords: Frog foundations, frog design
Abstract: A frog foundation research project, jointly funded by the Federal Railroad Administration and Association of American Railroads, and conducted at the Facility for Accelerated...
Report Number
RR 16-17
Office
RDI-21
15
Jun
2016
Research Results
Characterization of Track Substructure Using Falling Weight Deflectometer and Automatic Ballast Sampling
Keywords: Falling weight deflectometer, track substructure characterization, Raleigh wave
Abstract: Transportation Technology Center, Inc. (TTCI) tested a falling weight deflectometer (FWD) diagnostic apparatus, which was verified using automatic ballast sampling (ABS), and...
Report Number
RR 16-16
Office
RDI-21
11
May
2016
Research Results
Analysis of Grade Crossing Accidents Resulting in Injuries and Fatalities
Subject
Grade Crossing Modeling and Simulation
Keywords: Highway-rail grade crossings, railroad, crossings, accidents, injuries, fatalities, predictions, predictive model, human factors
Abstract: This report describes trends and correlations from an analysis of highway-rail grade crossing accidents between 2005 and 2014, which can be used in future predictive modeling...
Report Number
RR 16-10
Office
RDI-23